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Chemistry Basics

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Questions and Answers

Which statement about atoms is correct?

Atoms of a given element are not identical

Atoms of a given element have the same size, mass, and chemical properties (correct)

Atoms can be created or destroyed in a chemical reaction

Atoms of different elements are identical

What are compounds composed of?

Atoms and ions

Atoms and molecules

Atoms of different elements (correct)

Atoms of only one element

What happens to atoms in a chemical reaction?

Atoms are created

Atoms are separated, combined, or rearranged (correct)

Atoms are destroyed

Atoms remain unchanged

What is the ratio of the numbers of atoms of any two elements in a compound?

Always a simple fraction Signup and view all the answers

Who is credited with the discovery and identification of the first subatomic particle?

J.J. Thomson Signup and view all the answers

What is the unit of electric charge?

Coulomb Signup and view all the answers

What does a chemical reaction involve?

Separation, combination, or rearrangement of atoms Signup and view all the answers

Chemistry Basics

Choose a study mode

Podcast

Questions and Answers

Which statement about atoms is correct?

What are compounds composed of?

What happens to atoms in a chemical reaction?

What is the ratio of the numbers of atoms of any two elements in a compound?

Who is credited with the discovery and identification of the first subatomic particle?

What is the unit of electric charge?

What does a chemical reaction involve?

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